Fecking had me at 98 (i was happy to take that believe me) M40 this sunday. Almost new Impreza, black. followed me for a few junctions before pulling me! I was trying to work him out, just kept following my lead. It's obvious now he was getting a reading from me! They were too far back to see their uniform and were wearing all black no white shirts, 2 up ofcourse. You'd have to be going a ton before they'd be interested in you i suspect. I'm lucky to have kept my licence TBH.